Bump

from dataviz import bump
from dataviz import save
from dataviz import Theme

def main() raises:
    # Illustrative parcel volumes; bump converts each quarter's
    # volumes to ranks, revealing overtakes rather than magnitudes.
    var quarters: List[String] = ["Q1", "Q2", "Q3", "Q4", "Q5", "Q6"]
    var carriers: List[String] = [
        "SwiftShip", "ParcelPro", "Northstar", "MetroPost", "Relay",
    ]
    var parcels_k: List[List[Int]] = [
        [92, 96, 101, 108, 114, 121],
        [108, 105, 103, 101, 99, 97],
        [74, 82, 94, 106, 119, 128],
        [88, 90, 89, 93, 96, 102],
        [61, 68, 77, 85, 92, 105],
    ]

    var c = bump(
        quarters,
        carriers,
        parcels_k,
        title="Illustrative Parcel-Carrier Rankings",
        x_title="Quarter",
    )
    save(c, "docs/src/examples/out_bump.svg")